Update golang to 1.19

[x70b1]

I updated golang to 1.19.

Other than that I replaced CMD with ENTRYPOINT. This container image is a very good example for the difference between booth settings. You can now use the CMD for command line options. Example:

 nerdctl run mccutchen/go-httpbin -use-real-hostname

[mccutchen]

Thanks for the contribution! I'm 👍 to bump to 1.19, but unfortunately I'm not comfortable making the CMD → ENTRYPOINT change for backwards-compatibility reasons.

To complete the version bump, please also update the versions in the GitHub Actions workflows:

• https://github.com/mccutchen/go-httpbin/blob/main/.github/workflows/test.yaml#L22
• https://github.com/mccutchen/go-httpbin/blob/main/.github/workflows/test.yaml#L41-L42 (we run regression tests against the previous two releases)
• https://github.com/mccutchen/go-httpbin/blob/main/.github/workflows/lint.yaml#L17

[codecov-commenter]

Codecov Report

Merging #84 (3430fe8) into main (6740230) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #84   +/-   ##
=======================================
  Coverage   99.58%   99.58%           
=======================================
  Files           6        6           
  Lines         961      961           
=======================================
  Hits          957      957           
  Misses          2        2           
  Partials        2        2           

[mccutchen]

Ugh, looks like golangci-lint is not working w/ go 1.19. Gonna push a commit or two up here to upgrade it, too, and see what happens. We'll get this landed soon, thanks for your patience!

[mccutchen]

🤦 or … I'll accidentally merge this when trying to push a fixup commit to this branch, how about that?

[x70b1]

how about that?

Everything is green now, so if you don't say it that loud nobody will notice!